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review.shift-gmbh.com / SHIFTPHONES / mainline / linux / e6c67d8cf1173b229f0c4343d1cc7925eca11c11 / . / arch / x86 / include / asm / boot.h
blob: 680c320363dbab47b45b8752c66c64cab95295a8 [file] [log] [blame]
Greg Kroah-Hartmanb2441312017-11-01 15:07:57 +0100[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0 */
H. Peter Anvin1965aae2008-10-22 22:26:29 -0700[diff] [blame]2#ifndef _ASM_X86_BOOT_H
3#define _ASM_X86_BOOT_H
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]4
Cyrill Gorcunov95c4bff2009-01-14 23:37:46 +0300[diff] [blame]5
H. Peter Anvin658dbfe2009-06-25 15:16:06 -0700[diff] [blame]6#include <asm/pgtable_types.h>
David Howellsaf170c52012-12-14 22:37:13 +0000[diff] [blame]7#include <uapi/asm/boot.h>
H. Peter Anvin37ba7ab2009-05-11 15:56:08 -0700[diff] [blame]8
Robert P. J. Daybeb7dd82007-05-09 07:14:03 +0200[diff] [blame]9/* Physical address where kernel should be loaded. */
Vivek Goyaldd0ec162007-01-05 16:36:30 -0800[diff] [blame]10#define LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \
11 + (CONFIG_PHYSICAL_ALIGN - 1)) \
Vivek Goyale69f2022006-12-07 02:14:04 +0100[diff] [blame]12 & ~(CONFIG_PHYSICAL_ALIGN - 1))
13
H. Peter Anvin37ba7ab2009-05-11 15:56:08 -0700[diff] [blame]14/* Minimum kernel alignment, as a power of two */
Robert P. J. Day22f43192009-06-25 16:20:48 -0400[diff] [blame]15#ifdef CONFIG_X86_64
Kees Cook8665e6f2016-05-06 15:01:33 -0700[diff] [blame]16# define MIN_KERNEL_ALIGN_LG2 PMD_SHIFT
H. Peter Anvin37ba7ab2009-05-11 15:56:08 -0700[diff] [blame]17#else
Kees Cook8665e6f2016-05-06 15:01:33 -0700[diff] [blame]18# define MIN_KERNEL_ALIGN_LG2 (PAGE_SHIFT + THREAD_SIZE_ORDER)
H. Peter Anvin37ba7ab2009-05-11 15:56:08 -0700[diff] [blame]19#endif
20#define MIN_KERNEL_ALIGN (_AC(1, UL) << MIN_KERNEL_ALIGN_LG2)
21
22#if (CONFIG_PHYSICAL_ALIGN & (CONFIG_PHYSICAL_ALIGN-1)) || \
Jan Beulich6fc108a2010-04-21 15:23:44 +0100[diff] [blame]23 (CONFIG_PHYSICAL_ALIGN < MIN_KERNEL_ALIGN)
Kees Cook8665e6f2016-05-06 15:01:33 -0700[diff] [blame]24# error "Invalid value for CONFIG_PHYSICAL_ALIGN"
H. Peter Anvin37ba7ab2009-05-11 15:56:08 -0700[diff] [blame]25#endif
26
Cyrill Gorcunov95c4bff2009-01-14 23:37:46 +0300[diff] [blame]27#ifdef CONFIG_KERNEL_BZIP2
Kees Cook8665e6f2016-05-06 15:01:33 -0700[diff] [blame]28# define BOOT_HEAP_SIZE 0x400000
Cyrill Gorcunov95c4bff2009-01-14 23:37:46 +0300[diff] [blame]29#else /* !CONFIG_KERNEL_BZIP2 */
Kees Cook8665e6f2016-05-06 15:01:33 -0700[diff] [blame]30# define BOOT_HEAP_SIZE 0x10000
31#endif
Alain Knaffae03c492009-01-04 22:46:17 +0100[diff] [blame]32
33#ifdef CONFIG_X86_64
Kees Cook8665e6f2016-05-06 15:01:33 -0700[diff] [blame]34# define BOOT_STACK_SIZE 0x4000
Kees Cook3a947072016-05-06 15:01:35 -0700[diff] [blame]35
36# define BOOT_INIT_PGT_SIZE (6*4096)
37# ifdef CONFIG_RANDOMIZE_BASE
38/*
39 * Assuming all cross the 512GB boundary:
40 * 1 page for level4
41 * (2+2)*4 pages for kernel, param, cmd_line, and randomized kernel
42 * 2 pages for first 2M (video RAM: CONFIG_X86_VERBOSE_BOOTUP).
43 * Total is 19 pages.
44 */
45# ifdef CONFIG_X86_VERBOSE_BOOTUP
46# define BOOT_PGT_SIZE (19*4096)
47# else /* !CONFIG_X86_VERBOSE_BOOTUP */
48# define BOOT_PGT_SIZE (17*4096)
49# endif
50# else /* !CONFIG_RANDOMIZE_BASE */
51# define BOOT_PGT_SIZE BOOT_INIT_PGT_SIZE
52# endif
53
Kees Cook8665e6f2016-05-06 15:01:33 -0700[diff] [blame]54#else /* !CONFIG_X86_64 */
55# define BOOT_STACK_SIZE 0x1000
Alexander van Heukelum7c539762008-04-08 12:54:30 +0200[diff] [blame]56#endif
57
H. Peter Anvin1965aae2008-10-22 22:26:29 -0700[diff] [blame]58#endif /* _ASM_X86_BOOT_H */